Anais Urlichs · 42 min · intermediate · English

Full Tutorial: AlertManager Set up and PrometheusRules

Anton Putra · 38 min · intermediate · English

ArgoCD Tutorial for Beginners: GitOps CD for Kubernetes #1

Erratic Engineer · 36 min · advanced · English

AWS EKS full course | Part 1 | Create EKS Cluster using AWS management console

Matt Huang · 32 min · intermediate · English

Answering behavioral interview questions is shockingly uncomplicated

TrainWithShubham · 38 min · advanced · English

I answered DevOps Scenario-based Interview Questions & Answers for you

Simplilearn · 42 min · intermediate · English

Top 30 DevOps Interview Questions And Answers | DevOps Engineer Interview Questions

Rapid-fire coverage of core concepts and tooling: Linux, Git, Docker, Kubernetes, CI/CD, Jenkins, Ansible and cloud — maps directly to the concept/tooling round.

TechWorld with Nana · 35 min · intermediate · English

Setup Prometheus Monitoring on Kubernetes using Helm and Prometheus Operator | Part 1

Deploy Prometheus + Grafana to Kubernetes via Helm/Prometheus Operator for production monitoring and alerting

Rayan Slim · 27 min · intermediate · English

ArgoCD + Kubernetes: Learn GitOps (Github, Helm, Kustomize)

End-to-end GitOps deploy using ArgoCD with GitHub, Helm and Kustomize for the full pipeline.

TechWorld with Nana · 48 min · intermediate · English

ArgoCD Tutorial for Beginners | GitOps CD for Kubernetes

Build a GitOps CD pipeline: ArgoCD with Git as source of truth deploying a containerized app to Kubernetes.

TechWorld with Nana · 18 min · intermediate · English

Terraform explained in 15 mins | Terraform Tutorial for Beginners

Terraform fundamentals: providers, state and modules — the language and plan/apply workflow.

Cloud Champ · 26 min · intermediate · English

Simple DevOps Project to Practice Terraform with AWS

Hands-on project: provision AWS infrastructure (VPC/EC2) with Terraform end-to-end as code.

IBM Technology · 6 min · beginner · English

What is Site Reliability Engineering (SRE)?

Optional overview angle: what an SRE does day to day, reliability vs feature velocity, and the operations/incident-response role framing.

Google Cloud Tech · 8 min · intermediate · English

SLIs, SLOs, SLAs, oh my! (class SRE implements DevOps)

Authoritative Google breakdown of SLI vs SLO vs SLA and error budgets — exactly the reliability-targets distinctions interviewers test.

Aqua Security Open Source · 12 min · intermediate · English

Secure Your Containers: Trivy Vulnerability Scanning

Hands-on shift-left scanning with Trivy: detect vulnerabilities, misconfigurations and secrets in container images and IaC, the practical companion to the concept video.

TechWorld with Nana · 8 min · beginner · English

What is DevSecOps? DevSecOps explained in 8 Mins

The shift-left mindset: why security moves into the pipeline early and becomes a developer responsibility — the conceptual frame for scanning and secrets management.

TechWorld with Nana · 17 min · intermediate · English

How Prometheus Monitoring works | Prometheus Architecture explained

Prometheus architecture and components (server, pull model, exporters, Pushgateway, Alertmanager, storage) — the metrics pillar foundation before building dashboards.

Tech with Lucy · 18 min · intermediate · English

Master AWS Security - Security Groups & NACLs Deep Dive

Different angle: securing the VPC with Security Groups vs Network ACLs.

Travis Media · 40 min · intermediate · English

AWS VPC - A Crash Course (Demos Included)

Covers CIDR/IP addressing, subnetting, public/private subnet architecture and routing with hands-on demos.

Be A Better Dev · 6 min · beginner · English

Datacenter Vs VM (EC2) Vs Serverless (Lambda) Explained in 6 Minutes | Real Life Example

Serverless vs server-based angle: when to reach for Lambda over EC2.

Be A Better Dev · 14 min · beginner · English

EASIEST Explanation of AWS terms - EC2, Lambda, S3, RDS, RedShift, etc.

Plain-language overview of EC2 (compute), S3 (storage) and Lambda (serverless) and how they relate.

Tech with Lucy · 22 min · intermediate · English

Finally Understand AWS IAM Users, Roles, Policies, and Trust

Different angle: focuses on trust policies and how roles are assumed, reinforcing least-privilege thinking.

TechWorld with Nana · 20 min · beginner · English

AWS IAM Core Concepts You NEED to Know

Clear conceptual breakdown of IAM users, groups, roles and policies from a trusted DevOps educator.

Alta3 Research · 13 min · beginner · English

Ansible Playbook Basics - FINALLY Explained Clearly!

Hands-on playbook authoring: tasks, modules and idempotency explained clearly.

TechWorld with Nana · 17 min · beginner · English

What is Ansible | Ansible Playbook explained | Ansible Tutorial for Beginners

Canonical intro to what Ansible is and how idempotent playbooks configure servers.

edureka! · 30 min · intermediate · English

Terraform Modules | How to Build reusable Terraform Modules with Example | DevOps Training | Edureka

Optional angle: structuring inputs/outputs into reusable modules with a hands-on example

Cloud With Raj · 18 min · intermediate · English

Terraform Workspaces Explained: Manage Dev/Staging/Prod Environments with Separate States

Workspaces to isolate state across dev/staging/prod from one config

freeCodeCamp.org · 52 min · beginner · English

Learn Terraform with Google Cloud Platform – Infrastructure as Code Course

Full IaC course: declaratively provision cloud infrastructure with Terraform and manage state safely.

TechWorld with Nana · 35 min · intermediate · English

Complete Jenkins Pipeline Tutorial | Jenkinsfile explained

Declarative vs scripted Jenkinsfile, stages, conditionals, env vars, parameters and Groovy scripts.

TechWorld with Nana · 32 min · beginner · English

GitHub Actions Tutorial - Basic Concepts and CI/CD Pipeline with Docker

Workflow file syntax, events/actions, and building plus pushing a Docker image in a CI pipeline.

DevOps Directive · 12 min · intermediate · English

Deployment Strategies Explained: Blue-Green vs. Canary vs. Rolling

Visual comparison of blue-green, canary, and rolling deployments for risk-minimized releases.

TechWorld with Nana · 22 min · beginner · English

CI/CD Explained: The DevOps Skill That Makes You 10x More Valuable

Core CI vs CD vs continuous deployment concepts and the problems pipelines solve, using real engineering scenarios.

Cloud Champ · 20 min · intermediate · English

Kubernetes HPA Tutorial: Auto-Scale Pods Based on CPU & Memory Metrics for Beginners

Hands-on Horizontal Pod Autoscaler with resource requests/limits and the metrics server to scale on CPU and memory.

TechWorld with Nana · 14 min · intermediate · English

Kubernetes - Liveness, readiness and startup probes

Health probes for production reliability: how to configure liveness, readiness, and startup probes correctly.

Anton Putra · 40 min · intermediate · English

Mastering Kubernetes: Volumes (Persistent Volumes and Claims, ConfigMaps, Secrets, etc)

Different angle on persistent storage: emptyDir, CSI drivers, StorageClasses, PVs/PVCs alongside config objects.

TechWorld with Nana · 16 min · intermediate · English

Kubernetes ConfigMap and Secret as Kubernetes Volumes | Demo

App configuration via ConfigMaps and Secrets, including mounting them as volumes for real-world config-file use cases.

ByteByteGo · 6 min · beginner · English

Kubernetes Explained in 6 Minutes | k8s Architecture

Crisp visual model of the control plane, nodes and core objects that run containers at scale.

TechWorld with Nana · 60 min · beginner · English

Kubernetes Crash Course for Absolute Beginners [NEW]

Architecture, control plane, nodes, pods, deployments, and services explained with a hands-on demo deploying a web app with MongoDB.

TechWorld with Nana · 22 min · intermediate · English

Docker Networking Tutorial, ALL Network Types explained!

Optional different angle: bridge/host/none/custom networks and how Compose services communicate

Chayan Deokar · 12 min · intermediate · English

Docker Compose Explained: Run Multi-Container Apps | Setup, Launch, and Test Docker Compose

Step-by-step Docker Compose: define, launch and test a multi-service local environment.

TechWorld with Nana · 29 min · intermediate · English

Top 8 Docker Best Practices for using Docker in Production

Multi-stage builds, minimal/pinned base images, non-root user, .dockerignore, layer caching for small secure reproducible images

Programming with Mosh · 56 min · beginner · English

Docker Tutorial for Beginners

End-to-end Docker fundamentals: how containers isolate processes and how images are built up from layers.

KodeKloud · 11 min · beginner · English

Demystifying GitOps: A Beginner-Friendly Explanation

Optional gentle intro to GitOps principles and the single-source-of-truth model.

DevOps Toolkit · 19 min · intermediate · English

GitOps - Intro to Declarative Continuous Deployment

Why Git becomes the single declarative source of truth driving CI/CD and infrastructure.

DevOps Directive · 12 min · intermediate · English

Trunk-Based Development Explained - The Modern Git Workflow

Optional different angle: branching-strategy tradeoffs — trunk-based vs Git Flow vs GitHub Flow.

GitHub · 33 min · beginner · English

Pull Requests, Code Review, and the GitHub Flow - GitHub Universe 2015

Official walkthrough of branches, pull requests and review gates as the GitHub Flow collaboration loop.

GitHub · 36 min · intermediate · English

Git Internals - How Git Works - Fear Not The SHA!

Optional deeper angle: how Git models commits, trees, blobs and SHAs under the hood so history stops feeling scary.

freeCodeCamp.org · 41 min · beginner · English

Git for Professionals Tutorial - Tools & Concepts for Mastering Version Control with Git

Everyday professional Git workflow: branching, merging, history, stash and rebase so merges stop being scary.

IT k Funde · 24 min · intermediate · English

Networking For Beginners (2026)- IP Mac Subnet Switch Router DHCP DNS Gateway Firewall NAT DMZ

Broader primer on IP, subnets, DNS, DHCP, gateways, NAT and firewalls — the protocol primitives behind connectivity.

Cloud Champ · 18 min · intermediate · English

Networking Fundamentals for DevOps Engineers | DevOps Networking

Networking essentials framed for DevOps: IP, ports, DNS and debugging connectivity on real servers.

freeCodeCamp.org · 48 min · beginner · English

Bash Scripting Tutorial for Beginners

Hands-on Bash scripting: variables, conditionals, loops, functions and exit codes for safe operational automation.